JPH0377503B2 - - Google Patents
Info
- Publication number
- JPH0377503B2 JPH0377503B2 JP58041657A JP4165783A JPH0377503B2 JP H0377503 B2 JPH0377503 B2 JP H0377503B2 JP 58041657 A JP58041657 A JP 58041657A JP 4165783 A JP4165783 A JP 4165783A JP H0377503 B2 JPH0377503 B2 JP H0377503B2
- Authority
- JP
- Japan
- Prior art keywords
- projection lens
- magnification
- copying
- reflection cavity
- variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011521 glass Substances 0.000 claims description 13
- 238000005286 illumination Methods 0.000 claims description 10
- 108091008695 photoreceptors Proteins 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/54—Lamp housings; Illuminating means
- G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、原稿全面へのフラツシユ露光によ
り複写を行い、かつ複写倍率を変化させるように
した複写倍率可変式複写機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a variable magnification type copying machine that performs copying by flash exposure to the entire surface of a document and changes the copying magnification.
従来のフラツシユ露光型複写機のうち、固定倍
率式のフラツシユ露光型複写機においては、特開
昭55−115058号公報に示されているように高度な
拡散反射面で囲われたライトハウジングの内部に
照明ランプを設け、その照明光を側面及び底面の
反射面で反射させ、ライトハウジング上部のプラ
テンガラス面に載置した原稿を均一に照明し、そ
の反射光を底面の開口に配設された投影レンズに
より感光体に結像するものがある。
Among conventional flash exposure type copiers, fixed magnification type flash exposure type copiers have a light housing inside a light housing surrounded by a highly diffuse reflective surface, as shown in Japanese Patent Application Laid-Open No. 115058/1983. An illumination lamp is installed in the housing, and the illumination light is reflected by the reflective surfaces on the side and bottom surfaces to evenly illuminate the document placed on the platen glass surface at the top of the light housing. Some types use a projection lens to form an image on a photoreceptor.
なおこのようなライトハウジングを用いると照
明ランプの利用効率が高く、特に高速型複写機に
適した露光装置を得ることができることとなる。 It should be noted that when such a light housing is used, the utilization efficiency of the illumination lamp is high, and an exposure apparatus particularly suitable for high-speed copying machines can be obtained.
一方、一般に複写倍率可変式複写機では原稿像
の倍率を変化させるために原稿面と投影レンズと
の距離を変えるだけでなく、さらに原稿と転写紙
を同一隅部で位置合せするため、原稿に対し投影
レンズの光軸を移動させる必要がある。そこで複
写倍率可変式複写機では、従来特開昭56−104355
号公報の第８図に記載されているように原稿面と
投影レンズとの距離を変えるだけでなく原稿に対
し投影レンズの光軸を移動させることが考えられ
る。なお、固定倍率式の複写機においては、従来
特開昭57−90664号公報に記載されているように、
原稿台上に載置した原稿を基準載置位置から移動
させることなく、感光体表面に結像する画像を移
動させて、原稿の画像を紙の所望の位置に記録す
るため、投影レンズを感光体に対し平行に移動さ
せるものもあるが、この特開昭57−90664号公報
に記載されたものは、原稿面と投影レンズとの間
の距離を変えるものではないので複写倍率可変式
複写機には適用できないものである。
On the other hand, in general, variable magnification copiers not only change the distance between the document surface and the projection lens to change the magnification of the document image, but also align the document and transfer paper at the same corner, so the document On the other hand, it is necessary to move the optical axis of the projection lens. Therefore, for variable magnification copying machines, conventionally
As described in FIG. 8 of the publication, it is conceivable to not only change the distance between the document surface and the projection lens, but also to move the optical axis of the projection lens with respect to the document. In addition, in fixed magnification type copying machines, as previously described in Japanese Patent Application Laid-open No. 57-90664,
In order to move the image formed on the surface of the photoconductor and record the image of the document at the desired position on the paper without moving the document placed on the document table from its standard placement position, the projection lens is There are some machines that move parallel to the body, but the machine described in JP-A-57-90664 does not change the distance between the document surface and the projection lens, so it is a variable magnification copy machine. It cannot be applied to
そこで、上述した特開昭56−104355号公報に記
載された投影レンズの移動構成を、上述した特開
昭55−115058号公報に記載されたフラツシユ露光
型複写機に採用することが考えられるが、単に特
開昭56−104355号公報記載の投影レンズの移動構
成を、特開昭55−115058号公報記載のフラツシユ
露光型複写機に採用すると、複写倍率を変更する
際に、固定されたライトハウジング内部で原稿面
と投影レンズとの間の距離を変えることとなるの
で、ライトハウジング底面の上方に投影レンズが
位置してしまう場合もある。 Therefore, it may be possible to adopt the projection lens movement configuration described in the above-mentioned Japanese Patent Application Laid-Open No. 56-104355 to the flash exposure type copying machine described in the above-mentioned Japanese Patent Application Laid-Open No. 55-115058. , if the moving configuration of the projection lens described in JP-A-56-104355 is simply adopted in the flash exposure type copying machine described in JP-A-55-115058, when changing the copying magnification, a fixed light is used. Since the distance between the document surface and the projection lens is changed inside the housing, the projection lens may be located above the bottom surface of the light housing.
従つて、フラツシユ露光の際は、ライトハウジ
ング底面の上方に位置する投影レンズにより、ラ
イトハウジング内に投影レンズの影ができ、ライ
トハウジング全体の反射効率や原稿照明の均一性
を著しく低下させる虞がある。 Therefore, during flash exposure, the projection lens located above the bottom of the light housing may cast a shadow inside the light housing, which may significantly reduce the reflection efficiency of the entire light housing and the uniformity of document illumination. be.
この発明は上述した事情に鑑み、複写倍率を変
化させた際においても、原稿と転写紙とを同一隅
部で位置合せが可能であり、しかもライトハウジ
ングの反射効率や原稿照明の均一性を低下させる
ことのない複写倍率可変式複写機を提供すること
を目的とする。 In view of the above-mentioned circumstances, this invention makes it possible to align the original and transfer paper at the same corner even when the copying magnification is changed, while reducing the reflection efficiency of the light housing and the uniformity of illumination of the original. It is an object of the present invention to provide a variable copying magnification type copying machine that does not cause copy magnification.
上述した課題を解決するため、この発明では、
上部に原稿を載置するプラテンガラスを設け、側
壁内方にランプ光源を配置した筐体と、該筐体内
にあつて、前記ランプ光源の照明光を前記プラテ
ンガラスへ反射させるべく前記プラテンガラスに
対向して配置され、底面に高反射面を形成する高
反射キヤビテイーと、該高反射キヤビテイーに支
承される投影レンズとを具備する複写倍率可変式
複写機において、複写倍率の変化に応じ、前記高
反射キヤビテイーを前記筐体内で上下移動可能に
配設するとともに、前記投影レンズを前記高反射
キヤビテイーの底面に沿つて移動可能に配設する
ようにしている。
In order to solve the above-mentioned problems, in this invention,
a housing provided with a platen glass on top of which a document is placed; a lamp light source disposed inside the side wall; In a variable copying magnification type copying machine, which includes highly reflective cavities that are arranged to face each other and form a highly reflective surface on the bottom surface, and a projection lens supported by the highly reflective cavity, the variable magnification The reflection cavity is arranged to be movable up and down within the housing, and the projection lens is arranged to be movable along the bottom surface of the high reflection cavity.
上述した複写倍率可変式複写機によると、複写
倍率を変更させる際は、投影レンズを支承し、し
かも底面に高反斜面を形成する高反射キヤビテイ
ーが筐体内を上下に移動し、これにより複写倍率
の変化に応じ原稿面と投影レンズとの間の距離を
変えるので、複写倍率を変更させた際に投影レン
ズが高反射キヤビテイーの上方に位置することは
なく、従つてフラツシユ露光の際に高反射キヤビ
テイー内に投影レンズの影が出来ないので、高反
射キヤビテイーの反射効率や原稿照明の均一性が
低下しないこととなる。また高反射キヤビテイー
の底面に沿つて投影レンズを移動させるようにし
たので、複写倍率を変化させる際においても、原
稿と転写紙とを同一偶部で位置合せすることがで
きることとなる。
According to the variable copying magnification type copying machine described above, when changing the copying magnification, the high-reflection cavity that supports the projection lens and forms a high anti-slope surface on the bottom moves up and down within the housing, thereby changing the copying magnification. Since the distance between the document surface and the projection lens is changed in response to changes in Since no shadow of the projection lens is formed within the cavity, the reflection efficiency of the high reflection cavity and the uniformity of document illumination will not be reduced. Furthermore, since the projection lens is moved along the bottom surface of the high-reflection cavity, even when changing the copying magnification, the original and the transfer paper can be aligned at the same position.
以下この発明に係わる複写倍率可変式複写機の
一実施例を詳述する。
An embodiment of the variable magnification type copying machine according to the present invention will be described in detail below.
第１図はこの発明に係わる複写倍率可変式複写
機１の要部断面図で、特に原稿全面へのフラツシ
ユ露光により複写を行い、かつ複写倍率を変化さ
せるようにした複写倍率可変式複写機を示してい
る。 FIG. 1 is a sectional view of a main part of a variable magnification type copying machine 1 according to the present invention. In particular, the variable magnification type copying machine is designed to perform copying by flash exposure to the entire surface of a document and to change the copying magnification. It shows.
この複写倍率可変式複写機１は、その上面にプ
ラテンガラス２を支承し固定された筐体３と、こ
の筐体３内に収容され、前記プラテンガラス２に
対向した高反射面を有し、その周縁を上方に折り
曲げた反射部材である高反射キヤビテイ４、この
高反射キヤビテイ４に直接光を照射するランプ光
源５、及び前記高反射キヤビテイ４の底面である
高反射面に配設された投影レンズ７とから構成さ
れている。 This variable copying magnification type copying machine 1 has a casing 3 that supports and fixes a platen glass 2 on its upper surface, and a highly reflective surface that is housed in the casing 3 and faces the platen glass 2. A high-reflection cavity 4 which is a reflective member whose periphery is bent upward, a lamp light source 5 that directly irradiates light to the high-reflection cavity 4, and a projection disposed on a high-reflection surface that is the bottom of the high-reflection cavity 4. It is composed of a lens 7.
このうち、前記高反射面を有する高反射キヤビ
テイー４は図示せぬ上下動機構により、プラテン
面であるプラテンガラス２に対し複写倍率に応じ
投影レンズ７を相対的に接近あるいは離間させる
ために、前記筐体３内を上下移動するように配置
されており、また前記投影レンズ７も図示せぬス
ライド機構によつて複写倍率に応じプラテン面に
対する投影レンズ７の光軸を平行移動させるため
に、前記高反射キヤビテイ４の底面、すなわち前
記プラテンガラス２に対向した高反射面に沿つて
移動可能に配設されている。なお前記高反射キヤ
ビテイ４の底面である高反射面には、投影レンズ
７を移動可能に案内する図示せぬ開口部が当然な
がら形成されているが、この開口部は例えば投影
レンズ７ととともに移動する高反射面により常に
覆われており、高反射面に形成された図示せぬ開
口部と投影レンズ７の〓間から反射光が洩れるこ
とはない。 Among these, the high reflection cavity 4 having the high reflection surface is moved by a vertical movement mechanism (not shown) to move the projection lens 7 relatively toward or away from the platen glass 2, which is a platen surface, according to the copying magnification. The projection lens 7 is arranged to move vertically within the housing 3, and the projection lens 7 is also arranged to move the optical axis of the projection lens 7 parallel to the platen surface according to the copying magnification by a slide mechanism (not shown). It is disposed so as to be movable along the bottom surface of the high-reflection cavity 4, that is, the high-reflection surface facing the platen glass 2. Incidentally, an opening (not shown) that movably guides the projection lens 7 is naturally formed in the high reflection surface that is the bottom surface of the high reflection cavity 4, but this opening can move together with the projection lens 7, for example. The projection lens 7 is always covered by a highly reflective surface, and no reflected light leaks from between the projection lens 7 and an opening (not shown) formed in the highly reflective surface.
なお、第１図で符号６はプラテンガラス２の上
面に載置された複写原稿、８は前記高反射キヤビ
テイ４の上下動を案内するガイド、符号９，１０
はそれぞれ遮光板、反射板で、遮光板９はランプ
光源２の直接光が複写原稿６にあたるのを防ぐた
めのものであり、反射板１０はランプ光源５の直
接光を前記高反射キヤビテイ４内に案内するため
のものである。また、第１図で符号１１は感光体
で、この感光体１１は前記高反射キヤビテイ４の
下方に配設され、前記投影レンズ７によつて投影
された複写原稿６の静電潜像を形成するものであ
る。 In FIG. 1, reference numeral 6 denotes a copy original placed on the upper surface of the platen glass 2, 8 a guide for guiding the vertical movement of the high reflection cavity 4, and numerals 9 and 10.
are a light shielding plate and a reflecting plate, respectively; the light shielding plate 9 is for preventing the direct light from the lamp light source 2 from hitting the copy document 6, and the reflecting plate 10 is for direct light from the lamp light source 5 to be directed into the high reflection cavity 4. This is to guide you. Further, in FIG. 1, reference numeral 11 denotes a photoreceptor, which is disposed below the high-reflection cavity 4 and forms an electrostatic latent image of the copy original 6 projected by the projection lens 7. It is something to do.
上述した本願発明に係わる複写倍率可変式複写
機１によると、複写倍率を変更させる際に、投影
レンズ７を支承した高反射キヤビテイー４が筐体
３内を上下に移動し、これにより複写倍率の変化
に応じ複写原稿６と投影レンズ７との間に距離を
変えるので、複写倍率を変更させる際に投影レン
ズ７が高反射キヤビテイー４の上方に位置するこ
とはなく、従つてランプ光源５によるフラツシユ
露光の際に高反射キヤビテイー４内に投影レンズ
７の影が出来ないので、高反射キヤビテイー４の
反射効率や原稿照明の均一性が低下しないことと
なる。 According to the above-mentioned variable copying magnification type copying machine 1 according to the present invention, when changing the copying magnification, the high reflection cavity 4 supporting the projection lens 7 moves up and down within the housing 3, thereby changing the copying magnification. Since the distance between the copy original 6 and the projection lens 7 is changed according to the change, the projection lens 7 is not located above the high reflection cavity 4 when changing the copy magnification, and therefore the flashing by the lamp light source 5 is prevented. Since no shadow of the projection lens 7 is formed in the high-reflection cavity 4 during exposure, the reflection efficiency of the high-reflection cavity 4 and the uniformity of document illumination are not reduced.
また複写倍率の変化に応じ高反射キヤビテイー
４の底面に沿つて投影レンズ７を移動させるよう
にしたので、複写倍率を変化させる際において
も、原稿と転写紙とを同一偶部で位置合せするこ
とができることとなる。 Furthermore, since the projection lens 7 is moved along the bottom surface of the high-reflection cavity 4 as the copying magnification changes, the original and the transfer paper can be aligned at the same position even when the copying magnification is changed. will be possible.
なお、上述した本願発明に係わる複写倍率可変
式複写機１によると第１図に示すように、複写倍
率を変化させるべく、一点鎖線で示すように高反
射キヤビテイ４を下方に移動させ、かつ投影レン
ズ７をランプ光源５側に移動させると、ランプ光
源５が発光した際に直接光の一部（矢印Ａ）が投
影レンズ７を介して感光体１１に到達し、感光体
１１を痛めるおそれがあるので、このような感光
体１１の損傷を防止するため、感光体１１の上方
に、ランプ光源２の直接光（矢印Ａ）を感光体１
１面上方で捕られて遮光するトラツプ板１２が配
設されている。 According to the above-mentioned variable copy magnification type copying machine 1 according to the present invention, as shown in FIG. 1, in order to change the copy magnification, the high reflection cavity 4 is moved downward as shown by the dashed line, If the lens 7 is moved toward the lamp light source 5 side, when the lamp light source 5 emits light, a portion of the direct light (arrow A) will reach the photoreceptor 11 via the projection lens 7, which may damage the photoreceptor 11. Therefore, in order to prevent such damage to the photoreceptor 11, direct light (arrow A) from the lamp light source 2 is directed above the photoreceptor 11 onto the photoreceptor 11.
A trap plate 12 is provided above one surface to block light.
なお、上記実施例では、ランプ光源５が発光し
た際に直接光の一部（矢印Ａ）が投影レンズ７を
介して感光体１１に到達しないように、トラツプ
板１２を配設するようにしたが、このほかにも第
１図と同一部分を同一符号で示す、第２図の複写
倍率可変式複写機２０で示すように、ランプ光源
５側に移動した前記投影レンズ７近傍の高反射キ
ヤビテイー４の底面に所定の高さを有する反射部
材である反射板２１を立設させるようにしても良
い。 In the above embodiment, the trap plate 12 is arranged to prevent a part of the direct light (arrow A) from reaching the photoreceptor 11 via the projection lens 7 when the lamp light source 5 emits light. However, in addition to this, as shown in the variable copying magnification type copying machine 20 of FIG. 2, in which the same parts as in FIG. A reflecting plate 21, which is a reflecting member having a predetermined height, may be erected on the bottom surface of 4.
なお、上述した反射板２１の高さを設定するに
あたつては、第２図と同一部分を同一符号で示す
第３図のように、最大複写原稿位置から投影レン
ズ７に入射する光線（矢印Ｂ）と、ランプ光源５
から投影レンズ７に入射する直接光（矢印Ｃ）と
の間の領域（斜線で示す）に前記反射板２１の先
端部２１ａ（第２図）を位置せしめ、ランプ光源
５の直接光が投影レンズ７を介して感光体１１に
到達させないようにする。なお、上述した領域は
各複写倍率によつて変化するので、各倍率毎に上
述した領域を求め、これらの共通領域に前記反射
板２１の先端２１ａを位置せしめれば良い。この
ように反射板２１の先端部２１ａを上述した共通
領域内に位置せしめれば、ランプ光源５の直接光
が投影レンズ７を介して感光体１１に入射するこ
とを防止することが出来るので、反射板２１の形
状は上述した形状に限定されることなく、例えば
複写原稿６に対する照明分布を良好ならしめるよ
うな形状、例えば第４図ａ，ｂ，ｃに示す高反射
キヤビテイ４の要部断面図のような反射板２２，
２３，２４の形状とするようにしても良い。 In setting the height of the reflecting plate 21 mentioned above, as shown in FIG. 3 where the same parts as in FIG. arrow B) and lamp light source 5
The tip 21a (FIG. 2) of the reflector plate 21 is positioned in the region (indicated by diagonal lines) between the direct light (arrow C) entering the projection lens 7 and the direct light from the lamp light source 5 entering the projection lens 7. 7 to prevent it from reaching the photoreceptor 11. Incidentally, since the above-mentioned area changes depending on each copying magnification, the above-mentioned area can be found for each magnification and the tip 21a of the reflecting plate 21 can be positioned in the common area. By locating the tip 21a of the reflector 21 in the above-mentioned common area in this way, direct light from the lamp light source 5 can be prevented from entering the photoreceptor 11 via the projection lens 7. The shape of the reflection plate 21 is not limited to the above-mentioned shape, but may have a shape that improves the illumination distribution on the copy document 6, for example, a cross section of the main part of the high reflection cavity 4 shown in FIGS. 4a, b, and c. A reflecting plate 22 as shown in the figure,
23 and 24 may be used.
上述した構成によると、複写倍率の変化に応じ
上下動する高反射キヤビテイー４の底面である高
反斜面に反射部材を取り付けるようにしたため、
複写倍率が変化してもランプ光源の直接光が投影
レンズを介し感光体へ照射させることがなく、こ
のため複写倍率が変化しても鮮明な静電潜像を得
ることができるとともに、構造が簡単であるので
複写倍率の変更にかかわらず鮮明な静電潜像を得
る複写倍率可変式複写機を安価に提供することが
出来ることとなる。 According to the above-mentioned configuration, the reflective member is attached to the high anti-slope surface that is the bottom surface of the high reflective cavity 4 that moves up and down in response to changes in copying magnification.
Even if the copying magnification changes, the direct light from the lamp light source will not be irradiated onto the photoreceptor through the projection lens, so even if the copying magnification changes, a clear electrostatic latent image can be obtained, and the structure will be Since it is simple, it is possible to provide a variable copying magnification type copying machine which can obtain a clear electrostatic latent image regardless of changes in copying magnification at a low cost.
以上説明したように、この発明では、プラテン
ガラスを載置し固定された筐体に対し、プラテン
ガラスに対向するとともに、投影レンズを支承
し、しかも底面に高反射面を形成する高反射キヤ
ビテイーを上下移動可能に配設し、これにより複
写倍率の変化に応じ原稿面と投影レンズとの間の
距離を変えるとともに、この高反射キヤビテイー
の底面に沿つて投影レンズを移動させるようにし
たので、複写倍率の変化に応じ原稿面と投影レン
ズとの間の距離を変える際に、投影レンズが高反
射キヤビテイーの上方に位置することはなく、従
つてフラツシユ露光に際に、高反射キヤビテイー
内に投影レンズの影が出来ないので、高反射キヤ
ビテイーの反射効率が低下せず、このためライト
ハウジングの反射効率や原稿照明の均一性を低下
させない複写倍率可変式複写機を提供することが
できる。
As explained above, in this invention, a high-reflection cavity that faces the platen glass, supports the projection lens, and forms a high-reflection surface on the bottom surface is provided in the case on which the platen glass is placed and fixed. It is arranged so that it can be moved up and down, thereby changing the distance between the document surface and the projection lens according to changes in the copying magnification.The projection lens is also moved along the bottom surface of this high-reflection cavity, making it possible to copy When changing the distance between the document surface and the projection lens in response to changes in magnification, the projection lens is not located above the high-reflection cavity, and therefore during flash exposure, the projection lens is placed inside the high-reflection cavity. Since no shadow is formed, it is possible to provide a variable copying magnification type copying machine that does not reduce the reflection efficiency of the high reflection cavity and therefore does not reduce the reflection efficiency of the light housing or the uniformity of document illumination.
第１図は本願発明に係わる複写倍率可変式複写
機の要部断面図、第２図は本願発明に係わる複写
倍率可変式複写機の他の実施例を示す要部断面
図、第３図は反射板の先端部が位置すべき領域を
示す要部断面図、第４図ａ，ｂ，ｃはそれぞれ反
射板の形状を示す高反射キヤビテイの要部断面図
である。
１，２０……複写倍率可変式複写機、２……プ
ラテンガラス、３……筐体、４……反射部材（高
反射キヤビテイ）、５……ランプ光源、６……複
写原稿、７……投影レンズ、２１，２２，２３，
２４……反射板。
FIG. 1 is a cross-sectional view of a main part of a variable magnification type copying machine according to the present invention, FIG. 2 is a cross-sectional view of a main part showing another embodiment of a variable magnification type copier according to the present invention, and FIG. FIGS. 4A, 4B, and 4C are sectional views of main parts showing the area where the tip of the reflector is to be located, and FIGS. 4A, 4B, and 4C are sectional views of main parts of the high-reflection cavity showing the shape of the reflector, respectively. 1, 20... variable magnification copying machine, 2... platen glass, 3... housing, 4... reflective member (high reflection cavity), 5... lamp light source, 6... copy original, 7... Projection lens, 21, 22, 23,
24...Reflector.
Claims (1)
け、側壁内方にランプ光源を配置した筐体と、 該筐体内にあつて、前記ランプ光源の照明光を
前記プラテンガラスへ反射させるべく前記プラテ
ンガラスに対向して配置され、底面に高反射面を
形成する高反射キヤビテイーと、 該高反射キヤビテイーに支承される投影レンズ
とを具備する複写倍率可変式複写機において、 複写倍率の変化に応じ、前記高反射キヤビテイ
ーを前記筐体内で上下移動可能に配設するととも
に、 前記投影レンズを前記高反射キヤビテイーの底
面に沿つて移動可能に配設した ことを特徴とする複写倍率可変式複写機。 ２ 前記高反射キヤビテイーは前記投影レンズに
入射する前記ランプ光源の直接光を複写倍率にか
かわらず遮蔽する固設された反射部材を有するこ
とを特徴とする特許請求の範囲第１項記載の複写
倍率可変式複写機。[Scope of Claims] 1. A housing provided with a platen glass on top of which a document is placed, and a lamp light source disposed inside the side wall; and within the housing, illumination light from the lamp light source is directed to the platen glass. A variable copying magnification type copying machine comprising: a high-reflection cavity disposed opposite to the platen glass to form a high-reflection surface on the bottom surface; and a projection lens supported by the high-reflection cavity; The variable copying magnification is characterized in that the high-reflection cavity is arranged to be movable up and down within the housing in response to changes in the projection lens, and the projection lens is arranged to be movable along the bottom surface of the high-reflection cavity. Copying machine. 2. The copying magnification according to claim 1, wherein the high-reflection cavity has a fixed reflecting member that blocks direct light from the lamp light source that enters the projection lens regardless of the copying magnification. Variable copying machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4165783A JPS59166930A (en) | 1983-03-14 | 1983-03-14 | Exposing device of copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4165783A JPS59166930A (en) | 1983-03-14 | 1983-03-14 | Exposing device of copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59166930A JPS59166930A (en) | 1984-09-20 |
| JPH0377503B2 true JPH0377503B2 (en) | 1991-12-10 |
Family
ID=12614436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4165783A Granted JPS59166930A (en) | 1983-03-14 | 1983-03-14 | Exposing device of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59166930A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124285A (en) * | 1974-08-22 | 1976-02-27 | Nittetsu Kinzoku Kogyo Kk | Kinzokuseisairono kimitsushikenhoho |
| JPS539840B2 (en) * | 1973-02-09 | 1978-04-08 | ||
| JPS55115058A (en) * | 1979-02-26 | 1980-09-04 | Xerox Corp | Illuminator for copier |
| JPS56104355A (en) * | 1980-01-07 | 1981-08-20 | Xerox Corp | Exposure apparatus |
| JPS5790664A (en) * | 1980-11-28 | 1982-06-05 | Ricoh Co Ltd | Image position adjuster for copying machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5642666Y2 (en) * | 1976-07-09 | 1981-10-06 |
-
1983
- 1983-03-14 JP JP4165783A patent/JPS59166930A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539840B2 (en) * | 1973-02-09 | 1978-04-08 | ||
| JPS5124285A (en) * | 1974-08-22 | 1976-02-27 | Nittetsu Kinzoku Kogyo Kk | Kinzokuseisairono kimitsushikenhoho |
| JPS55115058A (en) * | 1979-02-26 | 1980-09-04 | Xerox Corp | Illuminator for copier |
| JPS56104355A (en) * | 1980-01-07 | 1981-08-20 | Xerox Corp | Exposure apparatus |
| JPS5790664A (en) * | 1980-11-28 | 1982-06-05 | Ricoh Co Ltd | Image position adjuster for copying machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59166930A (en) | 1984-09-20 |
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